Improved modeling of $γγ$ processes in ultraperipheral collisions at hadron colliders
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| Format: | Preprint |
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2024
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| _version_ | 1866929517470154752 |
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| author | Crépet, Nicolas d'Enterria, David Shao, Hua-Sheng |
| author_facet | Crépet, Nicolas d'Enterria, David Shao, Hua-Sheng |
| contents | The CERN LHC is not only the current energy-frontier collider for parton-parton collisions, but has proven a powerful photon collider providing photon-photon ($γγ$) collisions at center-of-mass energies and luminosities never reached before. The latest theoretical developments implemented in the gamma-UPC Monte Carlo (MC) event generator, which can calculate arbitrary exclusive final state produced via $γγ$ fusion in ultraperipheral collisions (UPCs) of protons and/or nuclei at the LHC, are presented. These include azimuthal modulations of dilepton pairs produced in the $γγ\to\ell^+\ell^-$ process, and neutron emission probabilities for photoexcited lead ions in PbPb UPCs. A few comparisons of the results of the updated gamma-UPC v.1.6 code to relevant RHIC and LHC data are presented. |
| format | Preprint |
| id |
arxiv_https___arxiv_org_abs_2409_18485 |
| institution | arXiv |
| publishDate | 2024 |
| record_format | arxiv |
| spellingShingle | Improved modeling of $γγ$ processes in ultraperipheral collisions at hadron colliders Crépet, Nicolas d'Enterria, David Shao, Hua-Sheng High Energy Physics - Phenomenology High Energy Physics - Experiment Nuclear Experiment Nuclear Theory The CERN LHC is not only the current energy-frontier collider for parton-parton collisions, but has proven a powerful photon collider providing photon-photon ($γγ$) collisions at center-of-mass energies and luminosities never reached before. The latest theoretical developments implemented in the gamma-UPC Monte Carlo (MC) event generator, which can calculate arbitrary exclusive final state produced via $γγ$ fusion in ultraperipheral collisions (UPCs) of protons and/or nuclei at the LHC, are presented. These include azimuthal modulations of dilepton pairs produced in the $γγ\to\ell^+\ell^-$ process, and neutron emission probabilities for photoexcited lead ions in PbPb UPCs. A few comparisons of the results of the updated gamma-UPC v.1.6 code to relevant RHIC and LHC data are presented. |
| title | Improved modeling of $γγ$ processes in ultraperipheral collisions at hadron colliders |
| topic | High Energy Physics - Phenomenology High Energy Physics - Experiment Nuclear Experiment Nuclear Theory |
| url | https://arxiv.org/abs/2409.18485 |